Roll-Out Shelves - the shelves that come to you. This cabinet organizer converts your existing cabinet space in minutes, so you can reach everything in your cabinets. They are made from natural finished nine-ply maple sides with melamine bottoms that are easy to clean and won't sag with heavy loads. Drawer guides will hold up to 75 lbs. so you need not worry about overloading your shelves. Each shelf extends out 3/4 its full length for complete access and mounts on the bottom to an existing shelf. Roll-Out Shelves are very easy to install, they install in existing cabinets on existing shelves, requiring only 4 screws. The sides taper from 3 inches in front to 6 inches in back. Once you install a Roll-Out Shelf, you'll wonder how you ever got along without them.